3992093991 has 10 divisors (see below), whose sum is σ = 5963498552. Its totient is φ = 2661395940.

The previous prime is 3992093957. The next prime is 3992093993. The reversal of 3992093991 is 1993902993.

It is not a de Polignac number, because 3992093991 - 2²¹ = 3989996839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992093993) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24642475 + ... + 24642636.

Almost surely, 2^3992093991 is an apocalyptic number.

3992093991 is a deficient number, since it is larger than the sum of its proper divisors (1971404561).

3992093991 is an equidigital number, since it uses as much as digits as its factorization.

3992093991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49285123 (or 49285114 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 54.

The square root of 3992093991 is about 63183.0197996265. The cubic root of 3992093991 is about 1586.3545282626.

The spelling of 3992093991 in words is "three billion, nine hundred ninety-two million, ninety-three thousand, nine hundred ninety-one".